1158444 has 36 divisors (see below), whose sum is σ = 3347344. Its totient is φ = 330912.

The previous prime is 1158427. The next prime is 1158457. The reversal of 1158444 is 4448511.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×1158444² = 2683985002272, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2047 + ... + 2550.

2^1158444 is an apocalyptic number.

1158444 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1158444 is an abundant number, since it is smaller than the sum of its proper divisors (2188900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1158444 is a wasteful number, since it uses less digits than its factorization.

1158444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4614 (or 4609 counting only the distinct ones).

The product of its digits is 2560, while the sum is 27.

The square root of 1158444 is about 1076.3103641608. The cubic root of 1158444 is about 105.0247560675.

It can be divided in two parts, 11584 and 44, that added together give a triangular number (11628 = T₁₅₂).

The spelling of 1158444 in words is "one million, one hundred fifty-eight thousand, four hundred forty-four".